When requesting a website, should check for status code

[connorjoleary]

Is your feature request related to a problem? Please describe.
When you parse the results of nested websites the code currently doesn't take into account if the response was something like 404, which means that we may see an error page, but treat is as if the website was returned as expected.

Describe the solution you'd like
When requesting a website, look for a status 200, and if it is something else, don't parse that page.

Describe alternatives you've considered
Give special results for specific codes (404, 403, ...).

Additional context
https://www.reddit.com/r/todayilearned/comments/nz6hl7/til_the_banana_plant_is_a_herb_distantly_related/